the next airport or airport with METAR station, but about any type of
airport
- as a side effect this change makes it also 30 to 50% faster :-)
In the long run this linear search shall be replaced with a spatial
algorithm (like octree), which will be a much bigger performance gain.
- preserve information from apt.dat about whether an airport is a "normal"
airport, a seaport, or a heliport. Do it without wasting another byte
in the FGAirport structure (saves 50kB of memory). Yes, I know bitfields. :-)
I refactored the XML loading code out of FGAirportDynamics and
FGRunwayPreference. I also added a new class XMLLoader, which serves as a
facade to the loader functions. Further I changed FGRunwayPreference to just
keep a FGAirport ref, which is more concise and closer to the right(tm)
solution than storing the airport data a second time ;-)
- Ground network slow-down finally works as expected
(although occasionally causing a traffic jam)
- Hold position instruction now really sets speed to zero, in addition
it actually works now for crossing and two-way traffic
- Attempt to limit execution time of ground network trace algorithm
to make performance acceptable at high-density networks
- Removed remaining terminal messages
- Various minor tweaks and clean-ups
- Moved AIModels/Traffic Manager related AI functions to a new file
- Rewrote the traffic manager so that the containers use pointers to
objects instead of the objects themselves, which will allow for a
more flexible memory management.
- Rewrote parts of the airport groundnetwork code, also because the
stl containers now contain object pointers instead of the objects
themselves.
- Fixed an uninitialized iterator in the AI distance tracking code
- Fixed flawed logic in some of the traffic controller's while loops
- Added a tower controller, which paces take-off behavior of AITraffic
in a more realistic way.
- Various other minor fixes and fine tuning.
This patch makes FlightGear at least compile on MSVC. I hope I have removed
reference of my other local changes. DSP and DSW files are included for
reference. They have been reconstructed with am2dsp.pl. I had to introduce a
change to am2dsp because of the need of filenames with embedded spaces. (Yuck)
The major direction is to remove clutter like the _USE_MATH_DEFINES and have it
on the compiler command line sice there is no central include file. You will
have to put it on the command line for your locale Project files, if it not
there, already. I added the _CRT_SECURE_NO_DEPRECATE define for 2005, since it
does no harm to other VC version.
- Feet to meter conversion mistake (in AI getGround elev)
- Improved ground following code (not yet perfect, but for now no one will
notice it within the marginal altitiude differences at the taxitrack or
runway)
- Exclusion of the "AI" directory witihin data/Aircraft in
main/init/fgSearchAircraft, to prevent AI aircraft to be picked up by the
aircraft search function
* Use "const string&" rather than "string" in function calls when appropriate.
* Use "const Point3D&" instead of "Pint3D" in function calls when appropriate.
* Improved course calculation in calc_gc_course_dist()
* Safer thread handling code.
Vassilii Khachaturov:
Dont use "const Point3D&" for return types unless you're absolutely sure.
Erik Hofman:
* Use SGD_(2)PI(_[24]) as defined in simgear/constants.h rather than
calculating it by hand every time.
Auf Niederlandisch:
Bij deze de patch voor de taxiway code. Deze code is nog gebaseerd
op de bestaaande architectuur, gebaseerd op de FGAirport class in simple.[ch]xx
Ik heb me voornamelijk gericht op nieuwe functionaliteit; de volgende
submissie zal waarschijnlijk bestaan uit opschoning, opsplitsing en een
implementatie van de nieuwe airport architectuur, zoals voorgesteld door
David Luff.
En Anglais:
Here is the patch for the taxiway code. This code is still based on the
exsisting architecture, which is based on the FGAirport class in simple.[ch]xx
I've aimed mostly at new functionality; The next batch will probably contain
code cleanups, splitups and the implementation fo the new airport architecture,
as proposed by David Luff.
Attached is a patch to the airport data storage that I would like committed
after review if acceptable. Currently the storage of airports mapped by ID
is by locally created objects - about 12 Meg or so created on the stack if
I am not mistaken. I've changed this to creating the airports on the heap,
and storing pointers to them - see FGAirportList.add(...) in
src/Airports/simple.cxx. I believe that this is probably better practice,
and it's certainly cured some strange problems I was seeing when accessing
the airport data with some gps unit code. Changes resulting from this have
cascaded through a few files which access the data - 11 files are modified
in all. Melchior and Durk - you might want to test this and shout if there
are problems since the metar and traffic code are probably the biggest
users of the airport data. I've also added a fuzzy search function that
returns the next matching airport code in ASCII sequence in order to
support gps units that have autocompletion of partially entered codes.
More generally, the simple airport class seems to have grown a lot with the
fairly recent addition of the parking, runway preference and schedule time
code. It is no longer just an encapsulation of the global airport data
file, and has grown to 552 bytes in size when unpopulated (about 1/2 a K!).
My personal opinion is that we should look to just store the basic data in
apt.dat for all global airports in a simple airport class, plus globally
needed data (metar available?), and then have the traffic, AI and ATC
subsystems create more advanced airports for themselves as needed in the
area of interest. Once a significant number of airports worldwide have
ground networks and parking defined, it will be impractical and unnecessary
to store them all in memory. That's just a thought for the future though.
ssgSetNearFar(). This by default creates a symmetric view frustum which is
typically what an application wants.
However, to get control of the view frustum in order to build support for
asymmetric view frustums, we need to wrap these calls with a bit of our own
logic.
This set of changes wraps all calls to ssgSetFOV() and ssgSetNearFar() with
FGRenderer methods.
I also standardized how the FGRenderer class is handled in globals.[ch]xx.
This led to some cascading changes in a variety of source files.
As I was working my way through the changes, I fixed a few warnings along
the way.
I just heard from John Wojnaroski that you and he are going to work on getting
a flightgear demo machine up for the linux expo thursday and Friday. John
indicated that he would very much like to get a CVS version with the new
traffic code up and running before the expo.
a single apt.dat.gz file which is in the native X-Plane format.
To do this I wrote a front end loader than builds the airport and runway
list. Some of the changes I needed to make had a cascading effect, so there
are minor naming changes scattered throughout the code.
A good elevation is critical for proper glide slope modeling. This patch
assigns the average field elevation to any ILS component that doesn't have
a valid elevation.
Also, for an ILS approach, use the GS transmitter elevation for glide slope
calculations rather than the localizer elevation, in some cases this can
make a big difference.
I've done som more work on the gps instrument.
- You can now input airport-, nav- or fix-ID to select a waypoint.
- You have to specify either "airport", "nav" or "fix" in the waypoint-type
property (some fixes and navs have identical IDs).
- Formatted the time to waypoint output.
- Cleaned up and changed some propery names (wp-heading -> wp-bearing).
- I've also added a name member to the FGNav class so that the gps instrument
can get the name of the nav.
- Changed the airport name parsing in simple.cxx.
are many recognized limitations and inefficiencies with this entire approach,
however, it's a quick and dirty way to get something working, where before
we didn't.
The last change from Curt to Airports/simple.[ch]xx made
GUI/AirportList.cxx not compilable because of the loss of
a '*' in getAirport.
Also : fabs is not defined under MSVC unless <math.h> is
included.
Some more cmall changes to the SimGear header files and removed the
SG_HAVE_NATIVE_SGI_COMPILERS dependancies from FlightGear.
I've added a seperate JSBSim patch for the JSBSim source tree.
